Vintage Friden STW 10 Mechanical Calculator

Vintage Friden STW 10 Mechanical Calculator. Shipped with USP Ground.Friden, USA.Pronounced "Free-den" according to a Friden advertisement, the company was founded in 1932 by Carl Friden to manufacture his highly advanced mechanical calculator which was capable of addition, subtraction, multiplication, and division. Although Carl died in 1945 the company continued under the the guidance of Walter Johnson, who had provided financial backing.The Friden Calculating Machine Co., Inc., was ...founded in the 1930's by Swedish-born Carl M. Friden. Once customers purchased and started using the machines, Friden calculators quickly gained the reputation of being the 'Cadillac' of calculators. In fact, early Friden advertising literature self-proclaimed the machines as the "Aristocrat of Calculators". The precursor to the STW-10 was the model ST. The ST could automatically perform all four math functions. Friden, the perfectionist that he was, was personally involved in the mechanical design aspects of his machines. As a result of his skills and dedication, along with other gifted mechanical engineers that he hired on at Friden, they ended up with a machine that was fast, extremely durable, reliable, and easy to use. The ST was a very successful seller, and enjoyed a long production run which lasted through World War II. After the war, a refined version of the ST was created, and re-introduced as the STW-10 in 1949. There were some feature and cosmetic changes (most notably changes in colors used to minimize user fatigue) from the ST to the STW-10, but the internal workings were virtually the same as the ST. The STW-10 was immensely popular, and because of its popularity, it remained in production through 1966. In 1965, Friden introduced the world to all-electronic, transistorized calculators with the Friden EC-130 which marked the beginning of the end of Friden's mechanical calculators.NO POWER CORD , SOLD AS IS With NO RESERVE.


Read more